Multiple-color printing-press



(ModeL) S. CRUlVlP. Multiple Color Printing Press. No. 228,517. Patented'lune 8,1880.

Rhesus! f Warren STATES PATENT @rrrcn.

SAMUEL ORUMP, OF MONT CLAIR, NEW JERSEY.

MULTIPLE-COLOR PRINTING-PRESS SPECIFICATION forming part of Letters Patent No. 228,517, dated June 8, 1880,

Application filed April 3, 1880.

To all whom it may concern:

Be it known that I, SAMUEL CRUMP, of Mont Clair, in the county of Essex and State of New Jersey, have invented a new and useful Improvement in MultipleOolor Printing- ]?resses, of which the following is a specification, reference being had to the accompanying drawings.

The invention relates to an improvement in multiple-color printing-presses; and it consists in providing the driven wheels or gears carryin g the gripers with an idler pinion or pinions having a friction attachment for. the purpose of securing an even and regular movement in said gears, obviating the vibration caused by the gearing being worn, and always preservin g a proper relative position of the gripers to the form or printing cylinder, as hereinafter described more fully.

Referring to the accompanying drawings, Figure 1 is a perspective view of a portion of a cylinder-press containing an embodiment of the elements of theinvention. Fig. 2 is a detached perspective view of the invention. Fig. 3 is a side elevation of the idlerpinions and friction attachment. Fig. 4 is a detached perspective view, showing idler-pinions and friction attachment operated bya running belt.

A indicates the driving-pinion of a threecolor printing-press revolving in the direction indicated by an arrow in Fig. 1, motion being imparted by a suitable belt and pulley. The pinion A meshes with the teeth of a driving spur-wheel, B, mounted on the shaft 0, upon which the spur-wheels D and E and the formcylinder F are also secured. The spur-gear wheel G, of the same diameter as the wheels 13, D, and E, meshes with the teeth of the said wheel B, and is mounted upon the shaft H, which drives the impression-cylinder I.

J and Kindicate the two griper spur-wheels, to which are attached the griper-bars to, supporting the gripers b, for receiving the sheet of paper from the feed-board L, and carrying it between the impression-cylinder'I and the form-cylinder F. The spur-wheels J K are one-third larger than the other spur-wheels above mentioned, and are mounted eccentrically to the wheel G upon independent bearings or journals (7, attached to the sides of the press-frame. The position of the wheels J (Model.)

workmanship, 850., the effect being to alter or vary the relative position between the formcylinder and the gripers during the revolution of the same, thereby distorting the register of the various colors on the printed sheet.

The following relates to one mode of applying my improvement to a two or more color printing-press of the above description:

I introduce a shaft, M, with two pinions, N and 0, attached, intern'iediate and below the griper spurwheels J and K. Upon the outer end of the shaft M is keyed an ordinary pulley or band-wheel, I, over which is placed the strap or band Q, one end of which is attached to a stud, It, upon the frame of the press, or otherwise secure'd, while its other end is controlled by a weight, S, or a spring or other device which will eXert a downward tension upon thestrap Q, and pulley P. Any friction attachment secured to the pinions N 0 would answer the purpose of the said strap and pulley, the only essential consideration being that the movement of the pinions be controlled and regulated by a power independent of the motive power, the purpose being that said pinions exert a uniform pressure upon the driven griper spur-wheels J and K, whereby a regular and steady movement of the said wheels is secured which will not be affected by the wear of the cogs or the momentum of the machinery.

The influence of the pinions N and O on the griper spur-wheels J and K is communicated by the latter to the spur-wheels D and E, and thus a uniform movement and a correct. relation of the series of gearing are preserved.

Fig. 4 represents a method of producing the same result of regulating the movement of the spur-wheels and their attachments by the use of an independent running belt, t, passing over the pulley P and traveling in the direction indicated by arrows. The belt t is speeded faster than the pulley, and is adjusted in tension so as to slip slightly, thereby causing the pinions to press against the griper spur- Wheels in the direction of their line of travel, keeping the cogs in close contact.

What I. claim as my invention, and desire to secure by Letters Patent, is-

1. An iinprovei'nentin printing-presses consisting in the combination of an idler pinion or pinions with the griper spur-Wheels, substantially as set forth.

2. An im nrovenlent in the gearing of print- SAMUEL ORUMP.

\Vitnesses:

P. S. TRUESDELL, D. J. BIKER. 

